Paper-bag machine.



PATENTED DEC. 4, 1906.

No. 837,275. r

P. L. BARTHOLOMEW.

PAPER BAG MACHINE.

APPLICATION FILED JUNE 21.1900.

13 SHEETS SHEET 1.

PATENTED DEC. 4, 1906 P. L. BARTHOLO'MEW. PAPER BAG MACHINE.

APPLIUATION FILED JUNE 21.1900.

13 SHEETS-SHBET 2 M'IENTOR.

5.77% a 0,14 TTORNV 0 lVfT/VESSES fiflm No. 837,275. 7 PATENTED DEC. 4, 1906.

P. L. BARTHULOMEW.

PAPER BAG MACHINE.

AIPLIOATION FILED JUNE 21.1900.

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ATTORNEYJ- No. 837,275. PATENTED DEO.4,1906. P. L. 'BARTHOLOMEW.

PAPER BAG MACHINE.

APPLIOATION FILED JUNE 21.1900.

FIG 4'.

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P. L. BARTHOLOMEW. PAPER BAG MACHINE.

APPLICATION FILED JUNE 21.1900.

13 SHEBTS-SHEET 5- w W 2 0 0 P w 2? I I ,xf r| a L 4 B 6 M P Y O ,6 w P W 5 F [NV tlvroza No. 837,275. PATENTED DEC. 4, 1906."

P. L. BARTHOLOMEW.

PAPER BAG MACHINE.

APPLICATION FILED JUNE 21.1900.

13 SHEETSSHEET 6 PiflitilWIED DEC. 4, 1906.

P. L. BARTHOLOMEW. PAPER BAG MACHINE.

APPLICATION FILED JUNE 21. 1900.

13 SHEETS-8HEBT 7- WITHESSEVS:

A TTQRNEVS PATENTBD DEC. 4

P. L. BARTHOLOMEW. PAPER BAG MACHINE.

APPLICATION FILED JUNE 21.1900.

13 SHEETS-SHEET 8.

' WITNESSES.- (Mm N0. 887,275. PATENTED DEC. 4, 1906. P. L BARTHOLOMEW.

PAPER BAG MACHINE.

APPLICATION FILED JUNE 21.1900.

1a snnms-sflnm s,

PATYENTEDDEO. 4, 1906.

P. L. BARTHOLOMEW.

PAPER BAG MACHINE.

APPLIUATION FILED JUNE 2L 1900.

'13 SHEETS-SHEET 10 u u-L- WI M58858 I mm mm PATENTED DEC. 4, 1906.

P. L. BARTHQLOMEW. PAPER BAG MACHINE.

APPLIOATION FILED JUNE 21.1900.

13 SHEETS-SHEET 12 A TT'URHEYIS I? z? IQQAEZZZWW k) W] TIJESSES PATENTED DEC. 4, 1906.

P. L. BARTHOLOMEWI PAPER BAG MACHINE;

APPLIOATIOH FILED JUNE 21. 1900.

13 SHEETS-SHEET l3 ATTORNEYSQ martian @TATES harass c arion.

PHINEAS L. BAETHOLOMEW, OF OMAHA, NEBRASKA, ASSIGNOR TO THE I UNION BAG & PAPER COMPANY. OF JERSEY Cl'lY, NEW JERSEY, A

PAPER-BAG MACHiNE.

' Specification of Letters Patent.

Yatented Dec. 1, 1906.

Application filed June 21,1900. Serial No. 21,126

To (0Z1 whom it Imty concern.-

Be it known that I, PHINEAS L. BAR- TnoLoMEw, a citizen of the United States, residing at Omaha, in the county of Douglas and State of Nebraska, have invented cer tain new and useful Improvements in Paper- Bag Machines, of which the following is a specification.

My invention relates to improvements in paper-bag machines; and it consists of certain improvements which are set forth in the following specification and are shown in the accompanying drawings, which form a part thereof.

My invention relates to that class of'machines designed for forming a satchel square bottom upon a bellows sidefold tube in which the paper tube upon which the bottom is to be formed is carried over a stationary table, while grips and fingers operated on a carriage at the sides of the table make the necessary diamond fold.

The present invention comprises certain improvements in machines of this class designed to more perfectly form the bottom of the bag. These improvements are concerned with the devices for forming the diamond fold.

.l shall describe the invention with reference to the accompanying drawings, which show a paper-bag machine of the general character referred to having my improvements applied to it.

In the drawings, Figure 1 is a side elevationof my machine; Fig. 2, an elevation of the opposite side, showing the gear-train. Fig. 3 is a plan view; F'g. 4, an elevation taken on a central longitudinal section; Fig. 5, an enlarged view of the portion of the machine which forms the diamond fold, shown on the same section as Fig. l. Fig. 6 isa cross-sectional view taken as on the irregular line 6 6 of Fig. 5. Fig. 7 is a plan view of the carriage T and parts attached thereto. Fig. 8 is plan view of the bottom of carriage T. Fig. 9 is a plan view of the bracket holding the movable cams and lying normally beneath carriage T. Fig.10 is a perspective view of the tube-forming and diamond-folding mechanism; Fig 11, a section on line 11 11 of Fig. 10; Fig. 12, a section on line 12 12 of Fig. 10: Fig. 13, a section on line 13 13 of Fig. 10; Fig. 14, a section online 14 1 4: of

i Fig. 10; 15, a section on line 15 15 of Fig. 10; Fig. 16, a longitudinal section through the slotted tongue guiding and liftmg device. Fig. 17 1s a plan view of the carriage and its mechanism, the parts beingshown in the positions they occupy just be fore enga ing the blank. Fig. 18 is a-sirnilar view showing the said parts acting on the blank. Fig. 19 is a perspective view of the parts acting on the blank in about the same position as shown in Fig. 18. Fig. 20 is a similar perspective View showing a more advanced position of the parts and the diamond completed. Figs. 21 to 25 show progressively the operations performed on a blank to convert it into a bag, and Fig 26 shows the completed bag fully opened.

Aindica tes the framework of the machine; M, a tube-forming mechanism adapted for forming a web of paper into a bellows-folded tube, the tube-forming mechanism shown heing adapted to form a tube with'its longitudinal seam upon its lower face, though this is not essential. Q Q indicate guide-rods which direct the edges of the paper downward over the former M. O O are rotatable disks which act to force thepaper into the lateral recesses of the former. G and G are supports which hold up the flaps on the under side of the former. H H are plates acting to define the bellows folds. R is a revolving knife whichcuts in. the top ply of the tube the circular cut, (indicated at V.) R R R R indicate the revolving. knives which cut in the paper longitudinal slits, (indicated at V V, &c.) R R indicate feed-rolls which feed the tube along, and R R are at once feed-rolls and knife-rolls which form in the tube the transverse cuts, (indicated at o '0 12 which sever the blanks from each other with the exception of a narrow web connecting their lower plies. This tube and blank forming mechanism is not of the essence of my invention and any convenient apparatus for forming bellows-folded blanks can be used in its place, and the same is true of the mechanism shown in my drawings for handling the blanks aft-er the diamond fold has been formed upon them and which ma be briefly indicated as follows: R Rf are eedrolls and kniierolls which draw the diamondfolded blanks forward and complete the severance of these. blanks from each other- R 3 are la once feed and paste-applying rolls, I

while B Hand .3" R indicate. r er mechanism for making the final folds whi'c'h'coim plete the bags.

. connected with t e intermediate gear F,

which through the intermediate F drives the the gears F F and F". The gear F also drives the gears F and through the intermediates F and F the gears F F, the intermediate F communicating through the other inter- Imedi'ates similariv marked with the ears F E, which in turn communicate motion through the intermediate F to the gears F F, said gears communicating through the intermediate F to the gears F F.

L is the shaft to which are attached the up per gear-wheel F and the knife R. L is the corresponding lower shaft, to which is se cured the lower gear-wheel F said last-mentioned gear-wheel and shaft acting in this case simply as intermediates.

L represents the shafts to which arefsecured the slitting-knives R and the gear- Wheels F". I

L L are the shafts to which are secured the feed-rolls R R and the gear-wheels F F.

-L L are the top and bottom shafts of the rolls R R.

L? and L are the top and bottom shafts of the rolls 8* i i L and L are the top and bottom shafts of the rolls R R.

L and L are the top and bottom shafts of the rolls B R.

L and L are the top and bottom shafts of the rolls R R .7 j r A A, &c., are adjusting-screws for the bearings of the difierent rolls.

Referring now to the mechanism which acts upon the bellows-folded blanks for the formation of the diamond fold thereon, P

(see Figs. 3', 4, 5, 10, and 16) is a preliminary P" by a spring? and connected with the shaft P upon which lever P is secured, by a connecting-rod P and rock-lever P 1. When thrust forward, the finger? is rojected upward by the wedge-shaped end of plate 1, (shown at P in Figs. 10 and 16,) and when retracted the fingerlies within the slot of the tongue-plate P".

A (see Figs. 4, 5, 6, and 9) indicates a bracket extending transversely across the machine and formed with vertically-perforated lugs, (indicated at P P which act as guides for the rods u' on which are supported cams, (indicated at and P these parts being best shown in Figs. 4 and 5. The rods which su port the cams are fastened at bottom to fates, (indicated at P and P and these p ates and the cams supported thereon are raised-at proper times by the action of'a cam S on the shaft L acting on a lever-arm D, which through a rock-shaft C communicates motion to the lever-arms, (indicated at D and D the lever-arms D supporting and moving the plate P and cam P througha pivoted lever-arm, (indicated at D while the arm D rests directly in contactwi'th the] plate P and through it controls the up and-k. down motion of the cam P. The ca'fnl? has a longitudinal slidingmotion as wellflas the up-and-down motion described, thislongitudmal motion being'forthe purpose of inmunicated'to 1t throughthe rod 1? an rocklever P, acted on by a ca'm P (see Figs. 4 and 5) on the shaft L K K (see Fig.9), are bearings supportin' the transverselyperforated pivot-studs 1 K at thesidesof the bracket A said "studssupporting the rods K K, having nuts K at their ends and gltudm'abmotion" ofeither of the rods in either. direction. These rods are connected witliagear on the carriage, to be described.

T is the reciprocating" carriage; which the machine and is actuated through" down:

the machine at B and having a am-rater B' whichrestsin contact with the'cain' B, .t'urning x vith the main shaft B N indicating "Egso as" to maintain contact bet'wi'ei'i'the cam and cam-roller. The face of the care passes the station'ary'tabl'e T, and the sides" of thecarria'ge are formed with grooved guide ways (indicated at K K") in which move the sliding blocks (indicatedat K supporting K K and the oscillating folding-fingers K K;

K K are grippin -nngers journaled on the shafts to which the ting the action of the springs K K K K are cross-fold defining-fingers secured on vertical stud shafts, (indicated at to enter the bellows folds and hold down the lower ply of the paper.

(indicatedfat K V f K KareirolIers projectingup from the riage is formed with a recess through which K K,) and K represents fingers adapted cre'asin its ra idit of actionand bein comsp'i ings' (indicated at. K) which oppose lon-' 18th movesin, guidewayh B R on the frame of."

wardl extending lugs E E and a yoke E i by a ever-arm pivoted at the bottom of,"

a spring which thrusts against theiehehafm shafts on which" are secured the gear-wheels ers K 'are secured and normally pressedagamst the fingers K by Y These fingers are pivoted 'on the carriage T and actuated by the slidingv blocks K throughconnecting-links, Y

face of the carriage T and upon which the ends of the fingers K rest when said fingers are retracted.

The blocks K are made to move in and out by the action of levers P P, pivoted at P P (see Fig. 8) and having their longer arms connected with the sliding blocks by links P, the pins with which said links connect extending up through openings K in the carriage into the bottoms of the sliding blocks. The pivot-levers P P have on their shorter arms the cam-rollers P P", which are acted on at proper times by the central cam P, supported on the bracket A The sliding blocks are normally held in retracted position by the action of the sprin K on the lever-arms P P The cross-fold defining-fingers K connect, through their shafts K, with the bell-crank levers, (indicated at K" and K said levers being connected by the link K and normally held in position to retract the fingers by the action of the spring K {See Fig. 8.) The fingers are thrown into operative position by the action of the cam P acting on the camrollers K secured to the lever K K K are gear-wheels journaled on brackets extending out from the bottom of the carriage T and engaged with the gearwheels K K of the sliding blocks. These gear-wheels K have lever-arms K GX- tending from them, which are engaged with the rods K already described, so that as the carriage moves backward and forward the spring-supported arms K will alternately thrust the lever-arm in one direction or the other, so as to oscillate the gear-wheels K K and the shafts and fingers connected therewith. 1

Except in matters of detailed construction the mechanism hereinabove described does not differ substantially from known mechanism for engaging the ends of the bellows-folded bag-blanks and forming thereon what is known as the diamond fold. The bag blanks are fed forward while the table is moving backward and the blank has reached the proper position with respect to the table, the cam acting on the lever-arm D and through the mechanism controlled by this lever-arm forces into operative position the cams P and P, which, acting on the camlevers secured to the carriage, already described cause, as the carriage moves forward, the fold-deiining fingers to be thrust across the blank and the fingers K to be thrustinto the bellows fold, while the fingers K pass above the tops of the folds. The same movement of the sliding blocks K which thrusts the fingers to the described position, turns inward the folding-fingers K K which enter the bellows fold and act to hold down the lower ply of the blank. As the table moves forward with the blank the upper ply is tightly gripped between the fingers K and K, and these fingers, acted on b y the rods K acting through the gear-wheel K" and the gear-wluml K, move backward throiwh an arc of nearly one hundred and eighty t egrees, carrying with them the upper ply of the paper, which is thus distended approximately into what is called the diamonr fold. On the completion of this fold and at a proper point in the forward motion of the carriage the finger-controlling levers on the carriage are released from the action of the cams P and P", whereupon the suddenlyact-ing springs already described operate'to retract the fold-defining fingers, so that the diamond-folded blank can pass freely forward to the feeding and cutting rolls and thence to the mechanism for completing the folds of the bag.

Referrin next to what constitutes in combination w h mechanism for forming a diamond fold, the essential novel feature of my invention, P is a plate supported immediately above the path of travel of the blank in that portion of the machine in which the diamond fold is formed. This plate P? by preference has an upwardly and rcarwardly inclined end, as shown, and for this reason I have referred to it a plow, and it is essential that this plate should be narrow-that is to say, its breadth must not be greater than the distance between the longitudinal slits V V formed in the blank. The plate or plow I is, as shown, supported in the position and given a reciprocatory movement corres onding more or less closely with that of the reciprocating carriage by a rod ll, secured to a slide 1, (shown in Fig. 1,) and to which a re ciprocatory movement is imparted by a cam S onv the shaft U through cmmecting mcch anism, as indicated at P in Figs. 4 and 5. It will be noticed (see Fig. 5) that the preliminary distending-finger 1 lies immediately in front of the front edge or plate P when it is in its forward position, and as the mouth of the advancing blank moves over the finger P it is thrown up so as to push up the upper ply of the pa er and insure that it passes over the plate 9, which plate when provided with :-n upwardly-inclined surface acts to continue the distention of the tube as it moves forward, so that the inclined surface of the plow or plate performs an important function in the o eration of distending the mouth of the blank (his distentionalso in the construction illustrated serving a most useful purpose in spreading open the bellows fold so that the ilistcnding-fingcrs'which coact in forming the diamond (all enter the same freely. The rcciprocatory movement of the plate P is such that it remains prac ticallystationary while the lnoul h of the blank is fed over it until the end of the blank is engaged by the distend devices, and the plate P then moves backward with the refriage while the diamond fold is being formed ICS ' and thereafter comes to rest or even moves forward again while the diamond-folded blank is being drawn forward, the plate then passing over the rear flap of the diamond,

pressing its central part down to true position and holding it there for a sufficient length of time to insure that it will not be disback to move wit while they operate on the diamond, and to hold down the rear fla of the diamond while the blank is being wit drawn from the folding mechanism, means for imparting the necessary movement to said parts, and means for withdrawing the folded blanks.

2. In a aper-bag machine, the combination with istending devices adapted to engage the end Of an advancing tube and fold it into a diamond, of a narrow late arranged in the line of travel of the blan so as to enter beneath its u per ply before it is folded back to move witli the distending devices while they 0 erate on the diamond'andto hold down 1; e rear flap of the diamond while the blank is being withdrawn from the folding mechanism, saidplate having a reciprocating movement inthe line of m vement of the blank and moving with said blank while'the diamond is being formed, means for impartand means for withdrawing ing the necessary movement to said arts, the foldedb anks.

3. In a paper-bag mac ine, the combination with distending devices adapted to engage the end of ail-advancing tube and fold it lnto a diamond, of a narrow plate arranged in the line of travel of the blank so as to enter beneath its upper ply before it is folded back and to hold down the rear flap of, the

' 'diam'bnd while the blank is being withdrawn from the foldin mechanism, means for withdrawing the f0 ded blanks, a former extension passing through the blank, and -a 'prehminary distending-finger,Isecured to said former extension, and acting to open the tube-mouth to insure that the upper ply shall pass'over the narrow plate.

. 4. In a paper-bag machine, the combination With'distending devices adapted to engage the end of an advancing tube'and fold it into a diamond, of a narrow late arranged in the line of travel of the bla so as to enter beneath its upper ply'before it is folded back and 'to hold down the rear flap of the diamend while the blank is bein withdrawn from the folding mechanism, said plate having a reciprocatin movement in the line of movement of the b ank and moving with said blank while the diamond is being formed, means for withdrawing the folded blanks, a

former extension passing through the blank and a preliminary distending-finger secured tolsaid former extension, and acting to open the tube-mouth to insure that the upper ply shall ass over the narrow plate.

5. tion, with feed mechanism delivering bellows-folded blanks to be operated upon, of a reciprocating carriage, fingers movin with said carriage acting to engage, and ho d stationary w th regard to the carria e, the lower corners of the bellows-folded b ankat the points where the corners of the bottomare to' be formed, oscillating fingers, also moving with the carriage and acting to engage the corresponding upper corners of the blank and spread out the diamond fold, a reciprocating narrow plate arranged to enter the mouth of the blank before it is spread out into a diamond and to hold down the rear flap of the diamond as the folded blank is withdrawn from the folding mechanism and means for withdrawing the-folded blanks.

6. In a paper-bag machine: the combination, with distending devices adapted to engage the end of an advancing tube and fold it n a paper-bag machine: the combinainto a diamond, with a narrow plate arranged in the linebf travel of the blank so as to enter beneath its upper ply before it is folded back to move with the distending devices while they 0 erate on the diamond, and to hold down t e rear flap of the diamond while the blank is being withdrawn from the folding mechanism, said plate having an inclined surface extending upward and rearward from its front end acting to spread open the end of the blank and means for imparting the necessary movement to said parts.

7. In a paper-bag machine: the combination, with distending device s adapted to enage the end of an advancing tube and fold it into a diamond, with a narrow plate arranged in the line of travel of the blank so as to enter beneath its upper ply before it is folded back and to hold down the rear flap of the diamond while the blank is being withdrawn from the foldin mechanism, said plate having an incline and rearward from its front end acting to surface extending upward spread open the end of the blank, anda prelim'inary distending-finger acting on the inside of the blank, to soopen'its-advancin end as to insure its 'assing over the incline surface at the end, 0 the narrow plate.v

8. In a aper-bag machine ha mechanism for ceding the blanks and for arming a diamond fold on the end of a bellows-folded blank as it is fed through the machine, a nar- "row plate over which the upper ply of the blank passes as it advances to the diamondfolding devices and under which the blank the blanks are withdrawn,

passes after the diamond is formed, in combination with a preliminary distending-finger acting to open the mouth of the blank to insure its upper ply passing over the plate, and means for operating said finger, comprising a reciprocating rod over which the tubular blanks are formed.

9. In a paper-ha machine the combination'of mechanism orming a bellows-folded tube and severing itinto bag-blanks connected only on their lower plies by narrow webs, said mechanism acting also to feed the connected blanks to the diamond-folding mechanism, with a reciprocating carriage, mechanism connected and moving 'With said car riage acting to fold the ends of the blanks into diamond folds, a reci rocating narrow plate arranged in the line 0 'movement of the drinks to enter beneath the lower ply thereof before the formation of the diamond and to hold down the rear flap of the diamond while and feed and sevthe diamond-foldering mechanism whereby severed ed blanks are withdrawn and final y from each other.

10. In a aper-bag machine, the combination of mec ianism for formin I a bellows-folded tube and severing it into hag-blanks connected only on their lower plies by narrow webs,'said mechanism acting also to feed the connected blanks to the diamond-folding mechanism, with a reciprocating carriage, mechanism connected and movin with said carriage acting to fold the ends 0 the blank into diamond folds, a reciprocating narrow plate arranged in the line of movement of the blanks to enter beneath the lower ply thereof before the formation of the diamond and to hold down the rear flap of the diamond while the blanks are withdrawn, said late having a rearwardly and upwardly inc ined surface extending from its front end whereby the advanc ng ends of the blanks are distended as l said gears K,

they move over said plate.

11. In a paper-bag machine, the combination, with mechanism for forming a bellowsfolded tube with its seam on the lower face and means for cutting said tube into blanks and feeding them to diamond-folding mechanism with the seam still on their lower faces, of mechanism for folding the ends of said blanks into diamond folds, a narrow reciproeating late ada upper p y of the lanks prior to their distention into adiamond to move with the distending devices while the the'diamond and to hold own the rear flaps of the diamonds as they are withdrawn and means for imparting the necessary move ment to said parts.

12. In a paper-bag machine: the combination, of a reciprocating carriage T, with sliding blocks K K, a shaft journaled in each block and having secured to it a gear-wheel and an oscillating finger, levers P, P, pivoted on the carriage and connected to operate the sliding blocks, avertically-movable cam P, arranged to operate said levers when raised, means for reciprocating the carriage and means for raising and lowering the cam;

13. In a paper-bagmachine: the combination, of a reciprocating carriage T, with sliding blocks K K, a shaft journaled in each block and having securedto it a gear-wheel and an oscillating oted on the carriage and connected to oper ate the slidin blocks, fold-defining'fingers sup )orted ont 1e carriage and movable thereon cm a position in which they define the cross-fold of the diamond to aposition wherein they clear the blanks, vertically-movable cams P, P, arranged to operate the levers connected with the blocks and the cross-folddefining fingersrespectively, means for reciprocating the carriage, and means for raising and lowering the cams.

14. In a paper-bag machine, a reciprocating carriage in combination with sliding blocks supported thereon and supportingshafts having attached to them oscillating fingers and gear-wheels, K, K, gear-wheels K, K?, journaled on the under side of the carriage and en havin lever-arms K, K, attached to them, rods WK, attached to said arms and springs connecting rods K K with a fixed part of the machine and which offer a yielding resistance to the movement of said rods in either direction.

PHINEAS L. BARTHOLOMEW.

Witnesses:

D. O. BARNELL,

E. OEHRLE.

ted to enter beneath the operate to form aged with the gears K, K,v

finger, levers P, P", piv- 

